besides, it's not a terribly simple problem to solve. You'd need some pretty good triangulation, some way of detecting where the ball is when a knee, hip, rear end, etc touches the ground, some unknown to me way of keeping the ball balanced with some electronics inside it, and something else I once thought of that I can't remember right now. Oh yeah, battery needs to be big enough to last a long time and transmit power would have to be fairly high to be able to escape a pile of rf absorbing human bodies.

It could probably all be solved, but honestly i would think that in balance each team gets as much benefit from a slightly mis-spotted placement as often as they get jobbed.